J56 



INDEX. 



Plants, the general character of . 



devoid of sensibility — their motion principally in 



the sap — their vitality periodical — the buds a source 



of regeneration, besides the seeds 

 their growth wholly annual — not influenced by the 



age of the parent trunk .... 



renew and vary their existence by the seed — 



219 



220 

 221 



15, 



nourished in infancy by the Cotyledones — sap elaborat- 

 ed by the extreme fibres of the root — aerated through 

 the cortical pores of the leaves 



their constitution more variable than in animals 



their resistance to the effects of heat and cold — re- 

 capitulation of their distinguishing traits 



Pogonia, or Arethusa, the genus of 



Polanisia, its generic character 



Polemonium, its genus and natural order 



Polyandria Class, how distinguished 



Polygonalum (Solomon's Seal), how characterized 



Polymnia, the genus of . . , 



Polypody (Polypodium), the generic trait 



Poke (Phytolacca), the genus, uses of 



Pond-lily (Nymphsea), the genus 



Pond-weed (Potamogeton), the genus of 



Poplar (Populus), the genus of 



Poppy (Papaver), its genus . . . 



Frenanthes, the genus of , 



Prickly-Pear, &.c. (Cactus), the genus of, &c. 



Princes'-Feather (Amaranthus), the genus of 



Proserpiuaca, generically allied to Myriophyllum 



Prunella, or Self-heal, the genus of 



Prunus, the genus of the Plum and Cherry 



Purslain (Portulaca), the genus of 



Pyrus, the genus of the Apple and Pear 



R. 



Radish (Raphanus), the genus of 139 



Red-bud (Cercis,) the genus of . . . 102 



Red Chickweed, Pimpernel (Anagalis), the genus of 69 



Reed (Arundo), the generic character . . 55 



Reed-mace (Typha), the genus of 189 



Rhexia, the genus of .... 95, 96 



Rhododendron, Azalea, Mountain Laurel, Swamp Honey' 



suckle, Sic. genus and species of 

 Rhodora, the generic trait 

 Rhubarb (Rheum), the genus of 

 Rice (Oryza), how known 



Rochelia, how distinguished from Cynoglossom 

 Rocket, or Dames'-violet (Hesperis;, the genus of 



222 

 ib. 



223 

 183 

 141 



70 

 113 



87 

 176 

 210 

 109 

 119 



63 

 206 

 116 

 162 

 111 

 192 

 58, 59 



47 



25 &. 112 



118, 119 



25 &. 114 



103 



105 



99 



91 



67 



139 



